(; ) that follows a regular pattern of success and failure, increase and decrease, etc.循环的；周期的◆History has shown that economic markets are cyclical.历史已经显示出经济市场是周期性的。◆the cyclical demand for steel products对钢材的周期性需求◆a cyclical downturn (= period of difficulty) in the advertising industry广告业的周期性衰退⨁a cyclical downturn / peak / recovery周期性衰退／高峰／复苏 easily affected by the success or failure of the general economy周期性的◆Improved economic conditions have benefitted cyclical stocks. 经济状况的好转令周期性股票受惠。◆cyclical unemployment周期性失业➡defensive ⨁cyclical shares / stocks周期性股票⨁a cyclical company / industry周期性公司／产业countercyclical